qayum, a. (1964). cumulative marginal productivity life of plants and the optimal technology. the institute of national planning.
Citação do estilo Chicago (17ª ed.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. cairo: the institute of national planning, 1964.
Citação MLA (9ª ed.)qayum, a. Cumulative Marginal Productivity Life of Plants and the Optimal Technology. the institute of national planning, 1964.